729755541 has 16 divisors (see below), whose sum is σ = 1092268800. Its totient is φ = 481486464.

The previous prime is 729755513. The next prime is 729755567. The reversal of 729755541 is 145557927.

729755541 is a `hidden beast` number, since 7 + 2 + 97 + 5 + 554 + 1 = 666.

It is not a de Polignac number, because 729755541 - 2¹⁰ = 729754517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729755641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136701 + ... + 141938.

It is an arithmetic number, because the mean of its divisors is an integer number (68266800).

Almost surely, 2^729755541 is an apocalyptic number.

It is an amenable number.

729755541 is a deficient number, since it is larger than the sum of its proper divisors (362513259).

729755541 is a wasteful number, since it uses less digits than its factorization.

729755541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278745 (or 278739 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The square root of 729755541 is about 27013.9878766538. The cubic root of 729755541 is about 900.3108148700.

The spelling of 729755541 in words is "seven hundred twenty-nine million, seven hundred fifty-five thousand, five hundred forty-one".